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Engineering electron-deficiency and wettability of Cu-based catalysts using arylamine ligands to promote
Kaiyuan Wang1, Yuan Xu1, Fei He2
1Jiangsu Engineering Research Centre for Carbon-Rich Materials and Devices, Jiangsu Province Hi-Tech Key Laboratory for Bio-Medical Research, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China. Yuanjian.Zhang@seu.edu.cn.
Abstract:
Regulating the electronic structure and surface properties of oxygen reduction reaction (ORR) electrocatalysts is vital for improving their performance. Herein, Cu-based catalysts were modulated with arylamine ligands, which induced electron delocalization from the Cu-N centre to carbon black and enhanced surface wettability. The benzenetetramine (BTA) ligand with more amino groups and fewer conjugated rings promoted the 4e ORR pathway with 97.8% selectivity. This study provides insights for designing efficient molecular ORR electrocatalysts.
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